355 citations · 2.6k across the 109 of their papers we have counts for
5 papers · 1 filter
Correlations between political party size and voter memory: A statistical analysis of opinion polls
Christian A. Andresen, Henning F. Hansen, Alex Hansen +2
This paper describes the application of statistical methods to political polling data in order to look for correlations and memory effects. We propose measures for quantifying the…
Capillary-Driven Instability of Immiscible Fluid Interfaces Flowing in Parallel in Porous Media
Thomas Ramstad, Alex Hansen
When immiscible wetting and non-wetting fluids move in parallel in a porous medium, an instability may occur at sufficiently high capillary numbers so that interfaces between the f…
The accuracy of roughness exponent measurement methods
Jan Øystein Haavig Bakke, Alex Hansen
We test methods for measuring and characterizing rough profiles with emphasis on measurements of the self-affine roughness exponent, and describes a simple test to separate between…
Ridge Network in Crumpled Paper
Christian Andre Andresen, Alex Hansen, Jean Schmittbuhl
The network formed by ridges in a straightened sheet of crumpled paper is studied using a laser profilometer. Square sheets of paper were crumpled into balls, unfolded and their he…
Burst statistics as a criterion for imminent failure
Srutarshi Pradhan, Alex Hansen, Per C. Hemmer
The distribution of the magnitudes of damage avalanches during a failure process typically follows a power law. When these avalanches are recorded close to the point at which the s…